結果
問題 | No.160 最短経路のうち辞書順最小 |
ユーザー | kei |
提出日時 | 2018-08-27 22:48:56 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,846 bytes |
コンパイル時間 | 2,157 ms |
コンパイル使用メモリ | 182,932 KB |
実行使用メモリ | 8,832 KB |
最終ジャッジ日時 | 2024-07-05 18:37:16 |
合計ジャッジ時間 | 10,837 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 1 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 4 ms
5,376 KB |
testcase_05 | AC | 5 ms
5,376 KB |
testcase_06 | AC | 7 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 40 ms
5,376 KB |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | AC | 1,671 ms
5,376 KB |
testcase_11 | TLE | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } /* <url:https://yukicoder.me/problems/no/160> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ struct edge{ ll u,v,cost; edge(ll u = 0,ll v = 0,ll cost = 0):u(u),v(v),cost(cost){} }; vector<ll> rec(ll n,vector<ll>& dist,vector<vector<edge>>& g,ll G,vector<int>& visited){ vector<ll> ret; visited[n] = true; if(n == G){ ret.push_back(G); return ret; } for(auto e:g[n]){ if(dist[e.v] == dist[e.u] + e.cost){ ret = rec(e.v,dist,g,G,visited); if(!ret.empty()){ ret.push_back(n); return ret; } } } visited[n] = false; return ret; } vector<ll> solve(){ vector<ll> res; ll N,M,S,G; cin >> N >> M >> S >> G; vector<vector<edge>> g(N); for(int i = 0; i < M;i++){ ll u,v,cost; cin >> u >> v >> cost; g[u].push_back(edge(u,v,cost)); g[v].push_back(edge(v,u,cost)); } for(int i = 0; i < N;i++){ sort(g[i].begin(),g[i].end(),[](const edge& e1,const edge& e2){return e1.v < e2.v;}); } vector<ll> dist(N,INF); dist[S] = 0; { queue<ll> q; q.push(S); while(q.size()){ ll n = q.front(); q.pop(); for(auto e:g[n]){ if(dist[e.v] > dist[e.u] + e.cost){ dist[e.v] = dist[e.u] + e.cost; q.push(e.v); } } } } //cout << dist << endl; vector<int> visited(N); res = rec(S,dist,g,G,visited); reverse(res.begin(),res.end()); return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }